Comparisons Celestron SkyProdigy 6 vs NexStar 4SE – Maksutov or Schmidt? by Rizka Amir April 9, 2020 by Rizka Amir Patented in the 1940s by a Russian inventor, Cassegrains have revolutionized the telescope world and opened our eyes to more than was previously possible. My father first introduced me to… 0 FacebookTwitterPinterestEmail
